Power take-off structure



July 9, 1946. w COUSE I v 2,493,848

POWER TAKE-OFF STRUCTURE Filed June 28, 1945 7 Sheets-Sheet l IATTORNEY.

July 9, 1946. K. w. cousri POWER TAKE-OFF STRUCTURE I Filed June 28,1945 7 s t 1 91; 2

' INVENTOR ATTORNEY i y 1946- K. w. co'us POWER TAKE-OFF STRUCTURE FiledJune 28, 1945 '7 Sheets-Sheet 3 ma N g WW i: 1 x w July 9, 1946. K. w.cousE POWER TAKE-OFF STRUCTURE Filed June 28, 1945 7 Shecs-Sheet 5INVENTOR. jqi/ wazwzrfi gz July 9, 1946. K. w.' COUSE 2,403,843

POWER TAKE-OFF STRUCTURE Filed June 28, 1945 7 Sheets-Sheet 6 INVENTOR.

Wustw and disassemble the entire structure.

Patented July 9, 1946 a UNITED; STATES PATENT OFFICE. it 2,403,848

POWER TAKE-OFF STRUCTURE Kibbey Whitman C'ouse, Newark, N. J.Application June 28, 1945, Serial No. (i02,117

13 Claims.

This invention relates to a power take-off structure and relatedelements for use in con-.

nection withvautomotive vehicles of the general classification of trucksand especially thosereferred to in the trade as having a 6 x 6? 'or 4x4chassis; t

7 It is one of thefobjects of my invention to provide a power take-01fstructure such that it may bepositioned adjacent the cab of the vehicleand between'as well as to some extent under the two automaticreleasing'means of the devices which engage the main control member ofthe power v seats of the, cab. While being so positioned the 68 whichare positioned in bosses 69 integralwith take-01f during theshiftingoperation whereby r all friction is eliminated from this controlmemher during the operation of the power take-off structure. v v

' Another object'of myinvention is to provide an improved type of innercontrol device for the power take-oft structure whereby any binding ordead centering of the moving parts is" eliminated.

Another object of m invention is to provide an improved means forlubricating the internal mechanisms of the power take-ofi structure.

A further object of my invention is to provide a structure in which theparts thereof are grouped as units to make it easier and faster toassemble These and other objects will be apparent to one familiar withthis type of mechanism from the following specification taken inconnection with the annexed drawings wherein: v

Figure 1 is a perspective view looking toward the control levers.

Figure 2 is a view similar to Figure 1 but looking at the assembledstructure in the opposite di rection from Figure 1. r

- Figure 3 is a longitudinal section of the left hand end of the powertake-ofi structure per se.

Figure 3a is a view similar to Figure 3 of the right hand end of thestructure shown in Figure 3. 5

Figure 4is a view on the line 4-4 of Figure 3a. Figure 5 is a'viewon theline 55 of Figure 3a. Figure 6 is a section of the casing showing themethods of attaching the two halves" of the casing at any one point. r f

Figure '7 is a view on the line 1'! ofFigure 6. Figure 8 is afragmentary sectional view of the lower left hand part of Figure 3a butshowing certain of the shifting devices in other positions of'operation.

Figure!) is a perspective view of one of the housing memberslooking inthe direction of an Figure 10 isa-view approximately of the-lower end ofthe main power shift lever and associated link engageable members. a

Figure 11 is a perspective view of thecover device used inthecombination. 3 1 L In thedifferent views where'n like numbers refer tocorresponding parts 1 illustrates broadly a framework on whichthe powertake-o'fii'struc ,ture has a casingrcomp'osediof twoparts' 2 and 3 whichare held together we plurality of-screws the casing parts. The casing atone end. carries a bearing which is heldvin place by a plate :5 andlocking screws 6. A support member] carries a' member 8 that issplinedto a driving shaft 9. The inner end of the member'B has anannular flange In which is positioned closely adjacent andextends beyondthe inner end of member I. The fiangevportion III has a projectingannular rim II which has internal gear'teeth l2 which are in continualmesh with ear teeth l3 on the end of a sleeve I4. V

The inner end of the driving shaft 9 has threads 15 to receive athreaded collar I6 which abuts against an annular shoulder H on themember 8 whereit is held in place by a plurality of set screws 18carried by the annular rim ll of the member 8. The inner end of thescrews l8 project into notches IS in a flange 20 formed on the collarIS. The collar "5 has a recess terminating in a, seat 2| for a heavyspring 22, the opposite end of which sets against the end of the stud23. The stud 23 is fastened to the sleeve II by a pin 24 that alsopasses through a circular member 25 and is held in position thereon ba'spring lock disposed arcuate surfaces to act as abutments I forshifting pins 3 I. This service permits the pins to center their pushcorrectly without binding. The pins 3| are pivoted at 32 toprojectionsl33 forming part of its cooperating pinion 34. Each of thepinions 34 are operatively carried on a stub shaft 35 held' in a supportmember 36 that in.

turn is fastened to its casing part, either 2 or 3, in a satisfactorymanner. Each of the pins 3| 5 passes .throughits cooperating opening 31ina washer 25 that sets in recesses 21 in the pin 24 part of the supportmember 36 which also carries springs 38 that are interconnected withtheir respective pins to cause them to follow the abutment surfaces 36and the sleeve M if this sleeve is moved. Each of the pinions 34 mesheswith its cooperating rack 39 slidably mounted on the inner peripheralwall of its casing part 2 or 3 and as shown in Figure 3a, whichillustrates one position of operation, abuts against the end wall of thecasing. Each of the racks 39 has a longitudinal recess therein andgrooves 49 formed therein near its opposite ends to receive collars 4iintegral with or fastened to rods 42 that extend through a gland 43 andpacking 44 preferably of the self-lubricating type. To the outer end ofthe rods 42 is securely mounted as by nuts 45, a ring 46 to whichreference will be later made.

The stud 23 has a flange 4'! that is provided with clutch teeth 48 whichare adapted to engage corresponding clutch teeth in a member 49 fastenedto the casing. The clutch teeth of the flange 41, as shown in Figure 8c;are in engagement with the clutch teeth of member 49 but it willbe'readily observed that the sleeve l4 and the studs 23 are adapted tobe moved to the right, as will be later explained, so that the clutchteeth 48 will engage the clutch teeth 50 on the member which is held tothe shaft 52 by splines and also by nut 53 positioned on the threadedend of the shaft 52. The lock nut 53 has a rounded end 54 to act as astop member for the flange 41 whenitis moved into driving engagementwith the member 5|, and a tie pin I63 prevents the nut 53 from turningoff the shaft 52.

'Thecasing is provided with a plurality of annular V shaped portions 55to receive a plurality of belts to which reference will later be made.Fastened to the casing is a closure member 56 which carries ananti-friction bearing 51 one member of which is positioned by snap rings58 on a support member 59.

Carried by the member 5| is a plurality of oil'tubes or scoops 60, fourbeing illustrated in Figure 5, The free ends of the tubes 69 are bentinwardly so as to better pick up the lubricating oil from the sump 6| asthe member 51 is rotated. The member 5i also has fastened thereto as bystuds 62 a member 63 which acts as a deflector to turn the oil inwardlyas it is discharged by the centrifugal action from the tube 60. t willbe noted that parts of the casing has openings 64 to allow the oil topass through to the interior of the casing and over the parts as haveheretofore been described. By reference to Figure 3 it will be notedthat there are two annular bosses 65 and 66 which may be made integralwith the casing members. These annular bosses act as dams to direct theoil coming from the tubes 59 around and into the sleeve i 4 andassociated parts. The dam 65 is provided with a plurality of orifices 61to allow the oil to flow back to the sump portion of the casing. Forsome installations the drive end of the casing may be required to beshortened in which case one of the bosses may be readily eliminatedeither in the pattern or by a small amount of machine work, so thatspecial castings will not be required for various lengths of structures.

In Figures 9 and I have shown means for acting on the ring 46 foroperating the internal mechanism of the power take-off structure asheretofore described. In Figure 9 a housing member 10 carries a pair ofside support members H and 12 between which is rotatably mounted amember 13 to which is fastened a stud 14. To the stud T4 is connected atie rod 15 fastened to an arm 16 which is integral with a. member havinganother arm 11 to which a rod 18 is fastened and operated by a fingerclutch member 18 so when this is operated the member 13 is rotated tomove by linkages I14, the forked fingers 19 are"pivoted :at I05 on alever I8 9 rotatably carried "011 13 and connected to lever 88 intoengagement with opposite sides of diametrically spaced parts of the ring46. By pulling on the lever 80, the ring 46 will be pulled away from thecasing so as to move the rods 42 and racks 39 and gears 34 to theposition shown in Figure 8 whereby the spring 22 will force the stud 23and its flange 4'! into a position whereby its clutch teeth 48 willengage the clutch'teeth 56 thereby making connection from the drivingshaft 9 to the driven shaft 52. When this operation is performed, itwill be noted that a lever arm 8| carried by the member 13 is moved intoa position to engage a switch arm .82 on an electrical switch 83 whichacts to open the circuit of any electrical apparatus such as a dynamotorthat may be connected at the time to some outside source of power. Whenit isdesiredto use the power take-01f structure for driving some pieceof apparatus on the truck or traveling machine shop, the control lever80 is operated to shift the ring 45 so as to move the parts back intoposition shown in Figure 3a and upon release, the rod 7 78 and spring 84will move the split fingers 19 away from the ring 46 so this will runabsolutely free of any frictional engagement with the fingers 19 andassociated parts. This I consider to be an important feature as iteliminates all wear on the shifting ring.

It will be noted from Figures 1 and 2 that the belts 85 coming from thepower take ofi drive as heretofore described pass over a pulley 86 whichis carried by a shaft 81 that is supported between bearings 88 and 89.These bearings are adjustably mounted in slots Ell) positioned intoframe support member 10 and slots 9| in the frame support member 92. Inorder to get a uniform adjustment or tension on the belts- 85 thebearings 88 and 89 for the shaft 81 are adapted to be engaged by plates93 on the frame member 70 and the other on the member 92. Each of theseplates 93 has a slot 94 therein which is adapted to receive a clampingstud 95. Plates 93 are of considerable width to engage a considerableportion of the bottom edge of the bearings 88 and 89. In order to movethe plates 93 into-engagement with the bearings 88 and 89, a pair ofcams 96, .being carried on the opposite ends of a shaft 91 so as tosimultaneously engage the adjusting plates 93 after they have beenloosened by their respective holding studs 95. The shaft 9'! is adaptedto be turned .by a wrench applied to an end of the shaft which projectsthrough the lower portion of either of the support members 19 and :92,whichever is found to be more convenient. This construction makes aneasy, very positive and uniform manner of adjusting the bearings for theshaft 87. This shaft is connected to a driving member or shaft 98 whichmay be coupled bycoupling 99 to any suitable cooperating member fromwhich power may be taken from the truck or shop engine controlled by theusual levers and transmission T but since these parts form no part of mypresent invention, nofurther de- I scription seemsnecessary. It maybe'mentioned, however, that-there is connected to the shaft 81 a pulley94 connected by a'belt I00 to a pulley l0] which is used to drive aflexible shaftllli! that operates. the governor G and associated partsfor controlling the speed of the engine while the power take-offstructure is being I utilized. It may also be mentioned that a housing Ill-3 such as shown in Figure 11 is provided to'fit over the upperportions of the supports and 92 and over the belts 85. This shieldhousing is preferably provided with'a swinging padded portion I04 forthe purpose of giving access to the power take-off mechanism and alsotoprotect the personnel'that utilize the seats on each side ofthisishield member, it being understood that these seats are positionedso that the control levers as shownin Figures 1 and 2 are within reachof the operator in a seating position.

What I claim is:

1. In a power take-off structure having a casing with its outer surfaceadapted to receive means for transmitting -power'from the casing whichhas bearings at each end carried in sup port means with a, driving shaftI projecting through the supportmeans at one end of the casing towardthe interior thereof and operatively carrying a member having clutchteeth and a driven shaft projecting through the support means at theother end of the casing toward the interior thereof and operativelycarrying on the end a member having clutch teeth; with a sleevepositioned between and in alignment in the said inner ends and havingclutch teeth slidably meshing with the clutch teeth on said membercarried by the driving shaft, a stud having one end entering the sleevewith means for operatively fastening the stud and sleeve together, theother end of the stud terminating in a toothed flange adjacent theclutch teeth of said member on the driven shaft, a spring interposedbetween the inner end of the stud and the driven shaft, a member fixedto the casing and having clutch teeth to be engaged by said toothedflange and means within the casing. for shifting the sleeve and stud tocause said clutch teeth on the flange to engage either the clutch teethon the member carried by the driven shaft or the clutch teeth of themember carried by the casing; said last mentioned means includingshifting devices for acting on said sleeve and co-acting stud, saidshifting devices comprising in part a circular member mounted on saidsleeve by means fastened to the stud, said member having oppositelydisposed arcuate surfaces to act as abutments, and a pair of racks andpinions positioned on opposite sides of the sleeve and stud, the pinionshaving pins extending into engagement with said arcuate abutmentsurfaces and means connected to the racks. and extending outside thecasing for shifting them and the sleeve and stud in at least onedirection for the purpose described.

2. A power take off structure as set forth in claim 1 furthercharacterized in that said circularmember is mounted on said sleeve soasto have at least a small amount of longitudinal movement thereon.

3. A power take off structure as set forth in claim 1 furthercharacterized in that said circular member is mounted on said sleeve bya pin going clear through said member, the sleeve and the stud, thesleeve having oppositely positioned slots therein and bushings in theslots through c 6. which said pin passes and means for locking the pininoperative position.

4. A power take off structure as set forth in claim 1 furthercharacterized in that the means to each 'rackland extending out of thedriving end only'o-f'the casing, a ring member fastened totheseextendingrod ends, means operative for engaging said ring member to move saidrods and racks and automatically acting means for disengaging saidengaging means from the ring member when said operative means isrendered inoperative.

e 5. A power take off structure as set forth in claim 1 furthercharacterized in that the means for shifting the racks comprises a rodfastened to each crack and extending out of the driving end only of thecasing, a ring member fastened to these extending'rcd ends, a yokestructure having oppositely positioned fingers for engaging said ringmember and a manually operative lever for moving said yoke to cause thefingers thereon to engage said ring member to cause it to move said rodsand racks and-resilient meansfor causing said yoke to move the fingersout of engagemerit with 'theri'ng'me'mber when the manual lever isreleased from its operative position.

6. A power take off structure as set forth in claim 1 furthercharacterized in that the means for shifting the racks comprises a rodfastened to each rack and extending out of the driving end only of thecasing, a ring member'fastened to these extending rodends, a yokestructure having oppositely positioned fingers for engaging said ringmember and a manually operative lever for moving said yoke to cause thefingers thereon to engage said ring member to cause it to move said rodsand racks and resilient means for causing said yoke to move the fingersout of engagement with the ring member when the manual lever is releasedfrom its operative position and further characterized in that the yokestructure carries an arm for operating an electrical switch to open thecircuit of any electrical apparatus such as a dynamotor, which may beoperated at the time by an outside source of power but which can beoperated by'the power take off structure by making a shift as hereindescribed.

7. A- power take off structure as set forth in claim 1 furthercharacterized in that said receiving means for transmitting power fromsaid structures includes a belt which connects said casing to a powerreceiving pulley fastened to a V shaft supported by adjustable bearingwith means for adjusting said bearing to regulate the tension of saidbelt while said shaft is flexibly coupled to a power delivery shaft.

. 8. A power take off structure as set forth in claim 1 furthercharacterized in that said member carried by the driven shaft and havingthe clutch teeth thereon also carries a plurality of oil pick upanddistributing devices for distributing oil through the power take of!structure.

9. A power take off structure as set forth in 'end carrying the drivenshaft is formed to provide a sump for the lubricating oil within thecasing while said member carried by the driven shaft and having theclutch teeth thereon also carries a plurality of tubes formed andarranged to pick up oil from said sump and discharge it through theinterior of the casing, and further characterized in that the drivingend of the casing has an annular dam boss with openings therein locatedso as to govern the flow of oil in this part of the casing.

11. A power take Off structure as set forth in claim 1 furthercharacterized in that the casing end carrying the driven shaft is formedto provide a sump for the lubricating oil within the casing while saidmember carried by the driven shaft and having the clutch teeth thereonalso carries a plurality of tubes formed and arranged to pick up oilfrom said sump and discharge it through the interior of the casing, andfurther characterized in that the driving end of the easing has at leasttwo annular dam bosses to govern the flow of oil in this part of thecasing, certain of the said bosses being adapted to be eliminated in themanufacture of the casing for the purpose described.

12. In combination with a power take-01f structure for use on anautomotive vehicle comprising, a rotatable casing having an outersurface to receive flexible driving means, a drive shaft capable ofbeing operated by the vehicle engine positioned at one end of the casingand a driven shaft at the opposite end of the casing with means withinthe casing for connecting the two shafts together for a through drive orfor connecting the drive shaft to the casing independent of the drivenshaft, and a ring positioned exteriorly of the casing but carried byrods entering the casing to actuate said means within the casing withfurther means under direct control of an operator of the vehicle forengaging said ring to move it to bring about said through drive and formaking complete disengagement from the ring when the casing is beingrotated by the driveshaft;

13 The combination with a power take-off structure for use on anautomotive vehicle as set forth in claim 12 further characterized inthat a pulley is provided to receive said flexible driving means comingfrom said casing, said pulley-being fastened to a shaft carried inbearings adjustably supported on vehicle frame member with means forsimultaneously and similarly adjusting both bearings for the purposedescribed.

KIBBEY WHITMAN COUSE.

